Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 1 | /* |
| 2 | * LM32 gdb server stub |
| 3 | * |
| 4 | * Copyright (c) 2003-2005 Fabrice Bellard |
| 5 | * Copyright (c) 2013 SUSE LINUX Products GmbH |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
Peter Maydell | ea99dde | 2016-01-26 18:16:57 +0000 | [diff] [blame] | 20 | #include "qemu/osdep.h" |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 21 | #include "qemu-common.h" |
Paolo Bonzini | 33c1187 | 2016-03-15 16:58:45 +0100 | [diff] [blame] | 22 | #include "cpu.h" |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 23 | #include "exec/gdbstub.h" |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 24 | #include "hw/lm32/lm32_pic.h" |
| 25 | |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 26 | int lm32_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 27 | { |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 28 | LM32CPU *cpu = LM32_CPU(cs); |
| 29 | CPULM32State *env = &cpu->env; |
| 30 | |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 31 | if (n < 32) { |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 32 | return gdb_get_reg32(mem_buf, env->regs[n]); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 33 | } else { |
| 34 | switch (n) { |
| 35 | case 32: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 36 | return gdb_get_reg32(mem_buf, env->pc); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 37 | /* FIXME: put in right exception ID */ |
| 38 | case 33: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 39 | return gdb_get_reg32(mem_buf, 0); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 40 | case 34: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 41 | return gdb_get_reg32(mem_buf, env->eba); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 42 | case 35: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 43 | return gdb_get_reg32(mem_buf, env->deba); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 44 | case 36: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 45 | return gdb_get_reg32(mem_buf, env->ie); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 46 | case 37: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 47 | return gdb_get_reg32(mem_buf, lm32_pic_get_im(env->pic_state)); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 48 | case 38: |
Andreas Färber | 986a299 | 2013-07-07 13:05:05 +0200 | [diff] [blame] | 49 | return gdb_get_reg32(mem_buf, lm32_pic_get_ip(env->pic_state)); |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 50 | } |
| 51 | } |
| 52 | return 0; |
| 53 | } |
| 54 | |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 55 | int lm32_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 56 | { |
Andreas Färber | 5b50e79 | 2013-06-29 04:18:45 +0200 | [diff] [blame] | 57 | LM32CPU *cpu = LM32_CPU(cs); |
| 58 | CPUClass *cc = CPU_GET_CLASS(cs); |
| 59 | CPULM32State *env = &cpu->env; |
Andreas Färber | d0ff8d0 | 2013-07-07 12:55:44 +0200 | [diff] [blame] | 60 | uint32_t tmp; |
| 61 | |
| 62 | if (n > cc->gdb_num_core_regs) { |
| 63 | return 0; |
| 64 | } |
| 65 | |
| 66 | tmp = ldl_p(mem_buf); |
| 67 | |
| 68 | if (n < 32) { |
| 69 | env->regs[n] = tmp; |
| 70 | } else { |
| 71 | switch (n) { |
| 72 | case 32: |
| 73 | env->pc = tmp; |
| 74 | break; |
| 75 | case 34: |
| 76 | env->eba = tmp; |
| 77 | break; |
| 78 | case 35: |
| 79 | env->deba = tmp; |
| 80 | break; |
| 81 | case 36: |
| 82 | env->ie = tmp; |
| 83 | break; |
| 84 | case 37: |
| 85 | lm32_pic_set_im(env->pic_state, tmp); |
| 86 | break; |
| 87 | case 38: |
| 88 | lm32_pic_set_ip(env->pic_state, tmp); |
| 89 | break; |
| 90 | } |
| 91 | } |
| 92 | return 4; |
| 93 | } |